A) 50 B) 23 C) 60 D) 51
A) 1 B) 3 C) 7 D) 17
A) 45 B) 5 C) 9 D) 103
A) 15 B) 3 C) 4 D) 33
A) Alkaline Earth Metals B) Alkali Metals C) Transition Metals D) Noble Gases E) Halogens
A) 14 B) 7 C) 14.007 D) 2
A) 6 B) 137 C) 56 D) 2
A) 2 B) 6 C) 1 D) 7
A) Chlorine is a liquid non-metal. B) Phosphorus is a non-metal gas. C) Tellurium is a solid metalloid. D) Mercury is a solid metal.
A) 96 B) 5 C) 42 D) 6
A) 2 B) 4 C) 3 D) 7
A) proton/-, electron/+, neutron/no charge B) proton/+, electron/neutral, neutron/- C) proton/+, neutron/-, electron/no charge D) proton/+, electron/-, neutron/uncharged
A) protons and orbits B) protons and electrons C) protons and neutrons D) neutrons and electrons
A) Phosphorus and Silicon B) Mercury and Thallium C) Carbon and Boron D) Argon and Krypton
A) the atom is a positively charged sphere with electrons embedded in it B) atoms are tiny solid spheres C) the atom is mostly empty space D) electrons orbit totally randomly around the nucleus
A) period B) nucleus C) region D) group
A) Beryllium B) Lithium C) Chlorine D) Magnesium
A) number of protons B) number of neutrons C) group number D) period number
A) the mass number minus the atomic number B) the same as the number of energy levels C) the same as the number of electrons D) greater than the mass number
A) Number of Neutrons B) State of Matter C) Period Number D) Group Number
A) Carbon B) Manganese C) Francium D) Nitrogen
A) Yes, some Carbon atoms have 6 protons, some have 7 protons. B) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity.
A) by adding protons B) By adding or losing electrons C) by adding electrons D) by losing protons
A) by losing electrons B) by adding electrons C) by losing protons D) by adding protons
A) by losing protons B) by losing electrons C) by adding electrons D) by adding protons
A) by adding neutrons B) by adding protons C) by adding electrons D) by adding or losing neutrons
A) same as the mass number B) mass number divided by 2 C) difference between the atomic and mass number D) same as the atomic number
A) the same as the atomic number B) the same as the number of neutrons C) the difference between the mass and atomic number D) the same as the mass number
A) Mg and F B) Na and Li C) Hg and C D) B and O
A) F and At B) Ba and Ra C) Li and Po D) Mg and Cl
A) The noble gases B) The alkali earth metals C) The transition metals D) The alkali metals E) The halogens
A) The noble gases B) The halogens C) The transition metals D) The alkali metals
A) 18 B) 17 C) 8 D) 4 E) 1
A) how reactive they are B) how many electron levels there are C) how many protons there are D) how many electrons there are
A) the number of neutrons B) how many valence electrons the atom has C) how many electrons the atom has D) the number of protons
A) Iron B) Fluorine C) Sodium D) Silver E) Mercury
A) F B) H C) Li D) Au E) Al
A) I B) Cs C) Li D) Al E) Mg
A) the number of electrons B) the number of protons C) the number of neutrons
A) Bohr B) Lewis C) Newton D) Dalton E) Mendeleev |